Writing an amount as a fraction of another
Writing an amount as a fraction of another is easy to do if you understand what a fraction is and how to simplify fractions.
Let's imagine you got 5 out of 10 on a test. You might write your score as 5/10 - here, you have written your score (5 marks) as a fraction of the total on the test (10 marks).
We usually simplify the answer where possible - if you were telling someone your test result, you could say you got 1/2 of the test correct, because 5/10 simplifies to 1/2.
A calculator will automatically simplify a fraction result for you if it is typed in using the fraction button.